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    Home / Products / Transceivers / 100G/200G Transceivers / 100G QSFP28 / 53833

    Arista Networks QSFP-100G-LR4 Compatible 100GBASE-LR4 QSFP28 1310nm 10km LC Duplex SMF DDM Optical Transceiver Module

    Product No: 53833
    75 Reviews
    7.4K Sold
    US$ 189.90  US$ 299.00
    Compatible
    Transceivers type
    1549 in real-time stock, 18 Jun, 2026

    Free Shipping over US$ 79.8

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    30-day Return and Refund

    5-Year Warranty 30-Day Returns 90-Day Exchange
    Warranty
    Providing industry-leading limited lifetime warranty.
    Please check our warranty policy for details.
    Returns & Exchange
    Exchanges caused by the customer's reasons will not be accepted.
    Please ensure that the item you're returning is repackaged with all the cords, adapters, and documentation included when you receive it.
    Please check our Return Policy for details.
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    Add to Cart Bulk Order Quotes 
    1. Rate: 100G; Connector: LC; with DDM
2. DFB+PIN; Low Power Consumption ≤3.5W
3. Applied in Campus Network, Data Center and Enterprise Core Layer
4. Compatible with 200+ Vendors
5. Hot Pluggable QSFP59 MSA Compliant
    See more

    Specifications

    Arista Networks QSFP-100G-LR4 Compatible 100GBASE-LR4 QSFP28 Optical Transceiver Module (SMF, 1310nm, 10km, LC, DDM)

     

    The Arista Networks QSFP-100G-LR4 compatible optical transceiver module is designed with duplex LC connectors, reaching a link up to 10km over single-mode fiber(SMF). QSFPTEK manufactured 100GBASE-LR4 QSFP28 transceiver module is compliant with IEEE 802.3ba 100GBASE-LR4, QSFP28 MSA standard. Besides, DDM (digital diagnostics monitoring) function is supported on the 100G fiber optic transceiver to achieve real-time operating parameters monitoring. With these features, this 100G QSFP28 transceiver is widely applied in 100G telecom connections, data centers, high-performance computing networks, enterprise core and distribution layers, campus networks, etc.

     

    Part Number:

    QT-QSFP28-LR4

    Vendor Name:

    QSFPTEK

    Form Factor:

    QSFP28

    Data Rate:

    103.125Gbps (4x 25.78Gbps)

    Wavelength:

    1295~1310nm

    Distance:

    [email protected]

    Connector:

    Duplex LC

    Cable Type:

    OS2 SMF

    Transmitter:

     4x LAN WDM DML (DFB)

    Receiver Type:

    PIN

    TX Power:

    -4.3~4.5dBm

    Receiver Sensitivity:

    <-10.6dBm

    Power Consumption:

    ≤4W

    Modulation Format:

    NRZ

    DDM:

    Support

    Bit Error Ratio (BER):

    1E-12 (without FEC)

    Protocols:

     IEEE 802.3ba, IEEE 802.3bm, SFF-8665, SFF-8636, 100G CWDM4 MSA, QSFP28 MSA

    Warranty:

    5 Years
    Quality Testing Program
    Optical Transceivers Testing

    Take a look at our test program to get the reliable and high-performance optical transceivers.

    Quality Certifications

    Features

    • 1. High Reliablility and Best Price
      Proudly self-producing and rigorous testing, QSFPTEK is dedicated to delivering cost-effective products with high reliability and performance at trade price.
    • 2. Wide Application Scenarios
      Fully compatible with almost all Arista devices. Ideal for 100G telecom connections, data center, high-performance computing networks, enterprise core and distribution layers etc.
    • 3. Protocols
      Compliant with IEEE 802.3ba 100GBASE-LR4, IEEE 802.3bm, QSFP28 MSA, SFF-8665, SFF-8636.
    • 4. Quality Certifications
      Backed by CE, FCC, ROSH, ISO9001.

    Applications

    Scenario 1: 100G Switch to 100G Switch Direct Connectivity

    QT-QSFP28-LR4 Scenario 1 100G Switch to 100G Switch Direct Connectivity  

     

    Scenario 2: 100G Switch to 100G NIC Direct Connectivity

    QT-QSFP28-LR4 Scenario 2 100G Switch to 100G NIC Direct Connectivity  

    Product details

    Various Switch Tests

     

    Every module is quality tested for compatibility in the multi-brand switches environment, which guarantees flawless operations.

     

     

     

    Tested in The Host Device to Prove Interoperability

     

    Every unit sold undergoes rigorous quality testing, to ensure compatibility in the target switch environment, guaranteeing perfect operation.

     

    QSFPTEK Test Rack

     

     

    Comprehensive Testing

     

    Every module is qualified through rigorous procedures and advanced equipment to ensure high-quality and reliable optical devices for you.

     

    QSFPTEK Test Devices

     

     

    100G QSFP28 Model Contrast Table

            

    Part Number

    QT-QSFP28-SR4

    QT-QSFP28-PSM4

    QT-QSFP28-IR4

    QT-QSFP28-LR4

    QT-QSFP28-CWDM-LR4

    QT-QSFP28-ER4 (Rx SOA)

    QT-QSFP28-ZR4

    Image

    Wavelength

    850nm

    1310nm

    1271~1331nm

    1310nm

    1271~1331nm

    1310nm

    1310nm

    Max Distance

    100m

    500m

    2km

    10km

    10km

    40km

    80km

    Cable Type

    OM3/OM4 MMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    Connector

    MPO/MTP-12

    MPO/MTP-12

    LC Duplex

    LC Duplex

    LC Duplex

    LC Duplex

    LC Duplex

    Tx Power(dBm)

    -8.4~+2.4

    -9.4~+2

    -6.5~+2.5

    -4.3~+4.5

    -6.5~+2.5

    -2.9~+4.5

    +2~+7

    Rx Sensitivity(dBm)

    -10.3

    -12.66

    -11.5

    -10.6

    -11.5

    -20.9

    -27

    Max Power Consumption

    2.5W

    3.5W

    3.5W

    4W

    3.5W

    5W

    5.5W

    Source

    VCSEL+PIN

    DFB+PIN

    CWDM DFB+ PIN

    EML+PIN

    CWDM DFB +PIN

    4x EML+SOA+PIN

    EML+SOA+PIN

    Operating Temperature

    0~70°C

    0~70°C

    0~70°C

    0~70°C

    -40~85°C (Available)

    0~70°C

    0~70°C

    -20~85°C (Available)

    0~70°C

    -40~85°C (Available)

     

    Questions & Answers

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    • Premium Service (2)
    • Excellent Quality (3)
    • Stable (1)
    • High Reliability (2)
    • Customer Support (1)
    • Good Price (3)
    • Repurchase (1)
    • Fast Delivery (1)
    • Compatibility (7)
    • William R United States of America
      2026-02-05

      The module delivers consistent performance and integrates well with our switches. Documentation could be clearer, but the product itself is dependable.

      Transceivers typeQSFP-100G-LR4

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Matthew United States of America
      2025-12-05

      I purchased the 100GBASE-LR4 QSFP28 module for our data center upgrade, and it has been working well. Their technical team also offered free support for my network setup, which made the whole process smooth.

      Transceivers typeQSFP-100G-LR4

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Scott United States of America
      2025-11-07

      I received the package and have already started using some of the optical transceivers. The 100G LR4 modules perform perfectly, and everything works as expected. We're very pleased with the quality and reliability of your products.

      Transceivers typeQSFP-100G-LR4

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Aramis United Kingdom
      2025-10-17

      I've been ordering transceivers from them regularly and have never encountered any issues thanks to their strict quality control. Truly proud of QSFPTEK's consistent reliability.

      Transceivers typeQSFP-100G-LR4

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Giacobbe United Kingdom
      2025-08-29

      By the way, I just want to say this has been one of the best customer service experiences I've ever had. I'll definitely be coming back and recommending you to others.

      Transceivers typeQSFP-100G-LR4

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Hayden United States of America
      2025-08-01

      Just wanted to say—this has been one of the best customer service experiences I've ever had. I'll definitely be a returning customer and will gladly recommend you to others.

      Transceivers typeQSFP-100G-LR4

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Joseph Leo United States of America
      2024-05-27

      This module is working flawlessly on my Arista 7050. I will come back for the next project, nice try!

      Transceivers typeQSFP-100G-LR4

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • SNielsen United States of America
      2022-12-23

      Bought these as a cheap alternative for my Arista switch. They work fine so far. Will buy again from them if needed.

      Transceivers typeQSFP-100G-LR4

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Christian Stout United States of America
      2022-12-03

      Worked with 7280SR3 Series switches over OS2 duplex fiber and achieved an 8.2km transmission between two branch offices.

      Transceivers typeQSFP-100G-LR4

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • J. Renteria United States of America
      2022-11-30

      What is there to say? The price was great. Module is as described. Worked well in our Arista switches, no problems. Fast delivery will made product and certainly.

      Transceivers typeQSFP-100G-LR4

      CompatibleArista

      Verified Purchase

      Helpful

      0

    Video

    Resources

    • PDF Document
      QT-QSFP28-LR4 Datasheet.pdf
    • PDF Document
      Transceiver Module User Guide.pdf
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    Arista Networks QSFP-100G-LR4 Compatible 100GBASE-LR4 QSFP28 1310nm 10km LC Duplex SMF DDM Optical Transceiver Module

    Compatible Arista

    Transceivers type QSFP-100G-LR4

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    Mark

    2023-12-15
    This product works well with my switch, and I plan to buy some DWDM transceivers from QT. Excellent value fo ct works well with my switch, and I plan to buy some DWDM transceivers from QT. Excellent valur money!

    Verified Purchase

    Helpful

    8

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    Arista Networks QSFP-100G-LR4 Compatible 100GBASE-LR4 QSFP28 1310nm 10km LC Duplex SMF DDM Optical Transceiver Module
    US$ 299.00
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    Arista
    Transceivers type
    QSFP-100G-LR4
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    Bulk Order Quotes
    Arista Networks QSFP-100G-LR4 Compatible 100GBASE-LR4 QSFP28 1310nm 10km LC Duplex SMF DDM Optical Transceiver Module

    Compatible Arista

    Transceivers type QSFP-100G-LR4

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